Investigation of photonic band gap in a circular photonic crystal

T. W. Chang, H. T. Hsu, C. J. Wu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Photonic band gap (PBG) in a circular photonic crystal (CPC) has been theoretically investigated in detail on the basis of transfer matrix method in the cylinder Bragg wave. Analytical results in the PBG have been made based on the reflectance spectrum in a quarter-wavelength stack. It is found that, at azimuthal number m = 0, both wavelength- and frequency-dependent reflection responses for the CPC bear strong resemblances to those of a one-dimensional planar PC (PPC). The reflection spectrum is further shown to be strongly dependent on the azimuthal number. In addition, the PBG is greatly enhanced as the azimuthal number increases. The PBG structure is periodically distributed at odd multiples of design frequency for m = 0, which is consistent with the PPC. This periodic feature, however, is no longer present for a larger m-number.

Original languageEnglish
Pages (from-to)2222-2235
Number of pages14
JournalJournal of Electromagnetic Waves and Applications
Issue number16
Publication statusPublished - 2011

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Physics and Astronomy
  • Electrical and Electronic Engineering


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